S. Tsitsipas and I. Buse are level 1-1 in their all-time head-to-head over 2 matches.
| Surface | S. Tsitsipas | I. Buse |
|---|---|---|
| Clay | 1 | 0 |
| Grass | 0 | 1 |
| Date | Winner | Score | Event |
|---|---|---|---|
| July 14, 2026 | S. Tsitsipas | 2 - 0 | Gstaad · 1/16-finals · clay |
| June 23, 2026 | I. Buse | 0 - 2 | Mallorca · 1/16-finals · grass |